[OpenWrt-Devel] [PATCH] ath79: switch to kernel 5.4
mail at david-bauer.net
Sat Apr 11 11:13:38 EDT 2020
On 4/3/20 10:58 PM, Paul Blazejowski wrote:
> Hello David,
> It is great to hear to we're switching to 5.4 on ath79 target but i
> wanted to bring to your attention that at least on the NAND subtargets
> (for me wndr3700v4) we need this commit  from Kevin to get the router
> to boot otherwise there's an oops in do dsp which prevents my router to
> boot and produces bootloop, Kevin's patch is incomplete as i have also
> alter it locally to apply to 5.4 kernel. With Michal's mtd concat patch
> i have successfully run the kernel/build for a couple of days with no
> issues. Maybe Michal can chaim in to confirm as he uses the same
> hardware in WNDR4300 routers just to be sure?
I've bisected this issue a bit further. Changing the CPU type for the
whole target doesn't seem right, as boards prior to AR934x are 24kc.
I've isolated the issue we are facing to 308-mips32r2_tune.patch. I'm a
bit puzzled how to proceed as i suspect other targets using a 74kc arch
will most likely show the same issue.
I propose to revert the change for ath79 locally using a target patch to
allow the target to be upgraded to Kernel 5.4.
IMHO 308-mips32r2_tune.patch should be a target specific patch anyhow,
as optimizing for a single CPU arch for all affected targets might not
be very efficient. But I'm not all to familiar with this topic.
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